Electric vehicles at the Houston Auto Show

January 22, 2014

Andrew Harrer/Bloomberg

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The Tesla Motors Inc. logo is seen as the silhouettes of members of the media arrive at the company's booth during the 2014 North American International Auto Show (NAIAS) in Detroit, Michigan, U.S., on Tuesday, Jan. 14, 2014. Tesla Motors Inc., the maker of high-end electric cars, gained the most in six weeks after the carmaker said it delivered 6,900 Model S sedans in the fourth quarter, pushing full-year sales beyond a company target.

Andrew Harrer/Bloomberg

34of42

The Tesla Motors Inc. logo is seen as the silhouettes of members of the media arrive at the company's booth during the 2014 North American International Auto Show (NAIAS) in Detroit, Michigan, U.S., on Tuesday, Jan. 14, 2014. Tesla Motors Inc., the maker of high-end electric cars, gained the most in six weeks after the carmaker said it delivered 6,900 Model S sedans in the fourth quarter, pushing full-year sales beyond a company target.